Follow the operation labels between lines. Apply the same operation to both sides.
Substitute the answer into the original equation to check that both sides agree.
Example 1
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Example 2
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Your turn
Question 1
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Check answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Question 2
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Check answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Question 3
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Check answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Question 4
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Check answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Question 5
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Check answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.
Use the graph to solve the equation.
Read both intersection x-coordinates; substitute to check.Answer
Draw the left-hand and right-hand expressions as two separate graphs.Read the -coordinate of each intersection. The two graph heights are equal there. Check by substituting into the original equation.