Answer:
(-32, 0)
Step-by-step explanation:
The x-intercept is the point on the line whose y-coordinate is zero.
Look at the points (8, 28) and (-2, 21).
As y goes from 28 to 21, a difference of 7, x goes from 8 to -2, a difference of 10.
Now look at the points (-2, 21) and (12, 14).
As y goes from 21 to 14, a difference of 7, x goes from -2 to -12, a difference of 10.
As you can see, each time y goes down by 7, x goes down by 10.
Start with (-12, 14).
Subtract 7 from y and 10 from x to get (-22, 7).
Now start with (-22, 7). Subtract again 7 from y and 10 from x.
You get (-32, 0).
Since now you have a y-coordinate of 0, point (-32, 0) is the x-intercept.
Answer: (-32, 0)
