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3 years ago

-3x-4y=-12 Need to find the slope and y-intercept

2 answers:

8 0

For this you want to put it into slope-intercept form: y=mx+b

-3x-4y=-12
add over -3x
-4y=3x-12
divide by -4
y=-3/4x + 3 (now it's in the right form!)

The slope is m (-3/4)
and the y intercept is b (3)

CaHeK987 [17]3 years ago

5 0

In form
ax+by=c
slope=-a/b
y intercpept=c/b

so

-3x-4y=-12
a=-3
b=-4
c=-12
slope=-(-3)/-4=3/-4=-3/4
yint=-12/-4=3

slope=-3/4
yint is 3

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konstantin123 [22]

Answer:

Step-by-step explanation:

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3 years ago

Stan made 24 sales in 6 hours . what is the ratio of sales to hours?

Furkat [3]

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3 years ago

Read 2 more answers

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BartSMP [9]

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3 years ago

Georgie joins a gym. She pays $25 to sign up and then $15 each month. Graph it. Label the y-intercept,the slope, and your axes.

Firlakuza [10]

The first thing you should do for this case is to find the equation of the line that best suits the problem and then plot it.
Let
x: number of months
y: amount paid.
The equation of the line is
y = 15x + 25
y-intercept = 25
the slope = 15
answer
Georgie pays (y axis) $ 15 dollars (the spole) monthly (x-axis) in the gym with a $ 25 registration (y-intercept)

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3 years ago

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X+3y=-5

zmey [24]

Answer:

Tyler's - (-5 - 3y) + (3y) = -5

Han's - (x) + (-5 - x) = -5

Step-by-step explanation:

If we are going to use Tyler's first step then we would use x = - 5 - 3y and substitute it in the original simultaneous equation x + 3y = -5, becoming (-5 - 3y) + (3y) = - 5 giving an exact answer of - 5.

But if we are using Han's first step then we will still substitute into the original simultaneous equation but in 3y. It would become

x + (-5 - x) = - 5 which also gives us an exact answer of -5.

Thus proving that both first steps show the same solution of -5.

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2 years ago