Question

help

Answer 1

@kadijahbaby34334

Answer 2

There are two types of formula to find the equation

Answer 3

First method\[y=mx+c\]second method\[(y-y_1)=m(x-x_1)\]

Answer 4

\[given~that~the~gradient,m=7\]

Answer 5

\[and~the~point (5,-9)=(x,y)/(x_1,y_1)\]

Answer 6

Now let's use the first method \[y=mx+c\]substitute x=5,y=-9 and m=7 into the equation

Answer 7

to find C

Answer 8

\[-9=7(5)+c\]\[c=-44\]\[Therefore,y=7x-44\]

Answer 9

Now let's use the second method\[(y-y_1)=m(x-x_1)\]substitute x_1=5,y_1=-9 and m=7 into the equation

Answer 10

\[(y-(-9))=7(x-5)\]\[(y+9)=7(x-5)\]

Answer 11

@narissa