AI generatedAlgebraKS3 / GCSE

Reading the -intercept

Reading the -intercept.

  • For a non-vertical straight line, use .
  • The gradient is change in divided by change in . The intercept is the value when .
  • Substitute a known point to find missing constant. Show the same operation on both sides.

Example 1

Read the -intercept.

Coordinate graph−4−3−2−11234−12−10−8−6−4−2240
The -axis is where .Read the -value where the line crosses this axis.

Example 2

Read the -intercept.

Coordinate graph−4−3−2−11234−10−8−6−4−220
The -axis is where .Read the -value where the line crosses this axis.

Your turn

Question 1

Read the -intercept.

Coordinate graph−4−3−2−11234−8−6−4−220
Check answer
The -axis is where .Read the -value where the line crosses this axis.
Question 2

Read the -intercept.

Coordinate graph−4−3−2−11234−6−4−220
Check answer
The -axis is where .Read the -value where the line crosses this axis.
Question 3

Read the -intercept.

Coordinate graph−4−3−2−11234−8−6−4−220
Check answer
The -axis is where .Read the -value where the line crosses this axis.
Question 4

Read the -intercept.

Coordinate graph−4−3−2−11234−10−8−6−4−220
Check answer
The -axis is where .Read the -value where the line crosses this axis.
Question 5

Read the -intercept.

Coordinate graph−4−3−2−11234−12−10−8−6−4−2240
Check answer
The -axis is where .Read the -value where the line crosses this axis.
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