$7x+4y=3$, $35x+20y=15$. For each real number $r$, which point lies o…

|Question 22Math

Question

Prompt

7 x + 4 y = 3

35 x + 20 y = 15

. For each real number

r

, which point lies on the graph of each equation?

\displaystyle (\dfrac{r}{5}+3,- rac{r}{5}+15)

(- \frac{4 r}{7} + \frac{3}{7}, r)

(r, \frac{7 r}{4} + \frac{3}{4})

(r, - \frac{4 r}{7} + \frac{3}{7})