Question

factor tree of 7x+3y​

Answer 1

Answer:

7x+3y=-21

7x+(3×0)=-21

7x+0=-21

7x=-21

7x/7=21/7

7x/7=-3

To find the y intercept by substitution 0 for x and solve for y;

7x+3y=-21

(7×0)+3y=-21

0+3y=-21

3y=-21

3y/3=-21/3

3y/3=-7

y=-7 so,the intercept is -7 or (0,-7)

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