and-provide-the-correct-third-point-for-x-4-provide-full-algebraic-justification

Question

A student finds intercepts of 2x - y = 4 as (2,0) and (0,-4). They pick an arbitrary third point by setting x = 4 and computing y to be 8, then plot (4,8). Is the student's third point correct?

Accepted Answer

No, the correct y-value should be 4.

Answer

Yes, because 2(4) equals 8.

Answer

No, the correct y-value should be -4.

Answer

Yes, because the slope of the line is 2.