3: Suppose a line has slope-2/3 and passes through the point (1, 8). Which other point must also be on the graph? A) (7,4) B) (7,12) C) (-5,4) D) (-5, -12)
b
Nope
c
Wrong again
d
Have you did the equation first?
i'm not good at math
@logan13
You should find the equation first then you could apply these coordinates A,B,C or D to find whether they fit in, you have a slope of, m=-2/3 and coordinate (1,8) to be \((x_1,y_1)\), using the standard \(y-y_1=m(x-x_1)\), your equation will be \(y=-\frac{2}{3}x+\frac{26}{3}\) Then, use the answers to see if they're correct by substituting in
i'm not good at this
Try using B (7,12), When x is 7, \[y=-\frac{2}{3}(7)+\frac{26}{3} \\ \\ y=-\frac{14}{3}+\frac{26}{3} \\ \\ y=12\] This means B, that point, is also on the equation of that graph
oops its A, not B
and y=4
God my math is rusty
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