What is the equation for the line?

Mathematics

2 answers:

antoniya [11.8K]3 years ago

6 0

Answer:

y=-4x+5

Step-by-step explanation:

the line goes down 4 for every 1 that x changes. the line crosses the y axis at 5.

(this might not be accurate, I can't really see if the line is on the exact point or not)

Cerrena [4.2K]3 years ago

6 0

Answer:

$\displaystyle y = -4x + 5$

Step-by-step explanation:

Starting from the y-intercept of $\displaystyle [0, 5],$ you do $\displaystyle \frac{rise}{run}$ by either moving four blocks north over one block west or four blocks south over one block east [west and south are negatives].

I am joyous to assist you anytime.

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Pls help, 20 points!!

klemol [59]

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation $y = \frac{-x}{2}$

2) Now, substitute $\frac{-x}{2}$ for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

3) We've found the x-value of the solution, -18. Now, substitute -18 for x back into one of the original equations (I chose the first one because it was simple) and isolate y. This gives us y = 9. Thus, in point form, the answer is (-18,9).