Find the slope and y-intercept of the line 18x+4y=112

Mathematics

2 answers:

FromTheMoon [43]2 years ago

7 0

Answer:

y-intercept is y= -4.5+28 slope is 4.5

Step-by-step explanation:

18x+4y=112

-18x -18x

4y=112-18x

-----------------

y= -4.5x+28

oksian1 [2.3K]2 years ago

4 0

Answer: The slope is m=-9/2, and the y-intercept form

Step-by-step explanation:

Rewrite in Slope-intercept form: y=mx+b

Subtract 18x from both sides of the equation.

4y = 112-18x

divide each term by 4 and simplify.

y= 28 - 9x/2

Reorder 28 and -9x/2.

y=-9x/2 +28

Find the values of m and b using the form y=mx+b.

Slope: -9/2

Y-intercept: 28

You might be interested in

28 students in the class 75% pass how many students pass

SashulF [63]

Answer:

21 students pass

Step-by-step explanation:

Firstly, you can set up the problem into an equation where the variable X would equal the number of students passing. You put X over the total number of students in the class, turning it into a fraction, then set it equal to the fraction $\frac{75}{100}$ (which is 75% represented as a fraction).

$\frac{X}{28} = \frac{75}{100}$

The fraction $\frac{75}{100}$ can be simplified, because 75 and 100 are both multiples of 25, so after canceling out the 25s you would be left with $\frac{3}{4}$ .

$\frac{X}{28} = \frac{3}{4}$

Next, you use the process of cross multiplication which is essentially just multiplying the denominators of both fractions (which would be 28 and 4 in this case) to each side of the equation.

$\frac{X}{28} * 28 * 4 = \frac{3}{4} * 4 * 28$