2 years ago

I can't figure out why the selected answer is correct. Please explain. Thanks!

1 answer:

3 0

I can't see it quite as clearly, but the equation is y=1/2x+5. The 5 is the y-int, which means it'll start at 5 and the slope is 1/2 so it'll go up once and to the right twice. y=1/2x+5 is the most likely choice since the other two choices don't match up with the graph given.

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Write the slope-intercept inequality for the graph below. (0,4) (-3,0)

Sphinxa [80]

$(0;\ 4);\ (-3;\ 0)\\\\y= mx+b\\\\0m+b=4\to b=4\\\\-3m+b=0\to-3m+4=0\to-3m=-4\to m=\frac{4}{3}\\\\Answer:y=\frac{4}{3}x+4$

7 0

3 years ago

Solve for x: 2x-5=49

elena-s [515]

2x-5=49

move -5 to the other side

sign changes from -5 to +5

2x-5+5= 49+5

2x=49+5

2x= 54

divide both sides by 2 to get x by itself

2x/2= 54/2

cross out 2 and 2, divide by 2 and then becomes 1*1*x=x

54/2= x

Answer:

x= 27

5 0

2 years ago

Read 2 more answers

Solve the system by using the combination method<br> 4x+9y=7 <br> 4x-9y=9

harkovskaia [24]

The two original functions are 4x+9y=7 and 4x-9y=9
To use the combination method, add all the values of the two equations together to cancel out one of the variables
4x+4x+9y-9y=7+9
8x=16
8x/8=16/8
x=2
4(2)+9y=7
8+9y=7
8-8+9y=7-8
9y=-1
y=- $\frac{1}{9}$