Math  /  Algebra

Questiona. Rewrite the given equation 7x+9y63=07 x+9 y-63=0 slope-intercept form. b. Give the slope and yy-intercept. c. Use the slope and yy-intercept to graph the linear function.

Studdy Solution

STEP 1

1. The equation given is a linear equation in two variables.
2. The slope-intercept form of a linear equation is y=mx+b y = mx + b , where m m is the slope and b b is the y-intercept.
3. To graph the linear function, we need the slope and y-intercept.

STEP 2

1. Rewrite the equation in slope-intercept form.
2. Identify the slope and y-intercept from the equation.
3. Use the slope and y-intercept to graph the linear function.

STEP 3

Start with the given equation:
7x+9y63=0 7x + 9y - 63 = 0
Isolate y y to rewrite the equation in slope-intercept form. First, move 7x 7x and 63 -63 to the other side:
9y=7x+63 9y = -7x + 63

STEP 4

Divide every term by 9 to solve for y y :
y=79x+7 y = -\frac{7}{9}x + 7
This is the slope-intercept form of the equation.

STEP 5

Identify the slope (m m ) and y-intercept (b b ) from the equation y=79x+7 y = -\frac{7}{9}x + 7 :
Slope (m m ): 79-\frac{7}{9}
Y-intercept (b b ): 7 7

STEP 6

To graph the linear function, start by plotting the y-intercept on the graph at point (0,7) (0, 7) .

STEP 7

Use the slope to find another point. The slope 79-\frac{7}{9} means that for every 9 units you move to the right (positive x-direction), you move 7 units down (negative y-direction).
From the y-intercept (0, 7), move 9 units to the right to (9, 7), then move 7 units down to (9, 0).

STEP 8

Draw a line through the points (0, 7) and (9, 0) to graph the linear function.

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