Slope Intercept From
What is the equation for slope-intercept form?
y = mx + b
f(x) = 2x
Solve f(15)
30
f(15) = 2(15)
BillyBob is saving money for a car. He starts with $500 and then saves $150 every paycheck. Write the equation.
y = 150x +500
What is the average rate of change
slope
What is the slope of a vertical line?
Undefined
Write the equation with a slope of -5 and y-intercept of 3
y = -5x + 3
f(x) = 12x - 5
Solve f(6)
f(x) = 55
LaFawnda has $29 on a gift card for a coffee shop. She spends $3 every time she buys coffee. Write the equation.
y = 29 - 3x
What is the slope for a line passing through (2,8) and ( 7, -1)
-9/5
Find the slope of (20, 3000) and (60,2000)
m = -25
Write the equation with a slope of 0 and a y-intercept of 47
y = 47
f(x) = 2x + 7
Solve f(x) = 19
x = 6
A ride in a cab costs $0.40 plus $0.15 per mile. How much does the cab charge for a trip of 8 miles?
$1.60
What is the formula for slope?
change in y/change in x or
y2 - y1/x2 - x1
What lines have the same slope?
Parallel lines
Write the equation in slope-intercept form when the slope is 4 and the line goes through the point (2,5)
y = 4x - 3
f(x) = 5x - (1/2)
Solve f(-1/2)
f(x) = -3
Molly is throwing a beach party. She still needs to buy beach towels and beach balls. Towels are $3 each and beachballs are $4 each. She bought 6 towels and her total cost was $34. How many beach balls did she get?
4 beachballs
34 = 3(6) + 4x
34 = 18 +4x
What is the slope of a line that passes through the points (9, 7/8) and (9, 16/57).
Undefined
What is the general form?
f(x) = ax + b
Determine the equation of the table provided
y = 6x + 4
f(x) = (1/4)(x - 16)
solve f(x) = -2
x = 8
Lisa is selling handmade jewelry. The materials cost $60, and she sells each piece for $20. How many pieces does she have to sell to break even?
3 pieces
60 = 20x
What is the slope of a line passing through the points (1/2, 1/4) and ( -1/4, 1/2). Answer must be simplified.
m = -1/3
What is factored form?
f(x) = a(x - c)