Question

is (1, -4) a solution to the equation y=-2x?

Answer 1

@nincompoop help

Answer 2

hi, need some help?

Answer 3

yes please

Answer 4

okay so to find out if the point is the solutiion to the equation we simply plug the values in the equation and see if the equation is balanced

Answer 5

oh ok

Answer 6

so y=-2(-4)?

Answer 7

not quite, our x intercept = 1 and our y intercept = -4

Answer 8

ok so -4=-2(1)

Answer 9

yes so if we simplify the right side of the equation, what do we get?

Answer 10

we get -4=-2?

Answer 11

yes so is it balanced?

Answer 12

no

Answer 13

there's your answer :)

Answer 14

thank you so much!

Answer 15

no problem :) great job

Answer 16

here is what you need to know
\((x,y) \rightarrow \) for the value of x, it returns a particular value of y
how do we determine that? well you have to look at the equation you are given
y = -2x

again (x, y)
y = -2x
4 = -2(1)

are the equal? are they?