Question

Danielle plotted 3 points from the equation y = 4x on this coordinate grid. She drew a straight line through the points.

Which ordered pair would also be on this line?





A.


(0, +3)


B.


(+6, +6)


C.


(+5, +12)


D.


(+5, +20)

Answer 1

Put the values of coordinates of the point into the equation of the line.

for (0; 3) → x = 0 and y = 3

y = 4x
3 = 4 · 0
3 = 0 false
.
.
.

for (5; 20) → x = 5 and y = 20

y = 4x
20 = 4 · 5
20 = 20 correct


Answer: D. (5; 20)