Vocab
What is y intercept
The point where the line crosses the y axis
Whats the equation for point slope?
Y-y1=m(x-x1)
What is the equation for slope intercept
Y=Mx+b
Whats the equation for standard form?
Ax+by=c
y=2x+7 what’s the slope?
2
What is slope
The steepness of the line or the angle of line
What is the first step when given 2 points
Find the slope
How do you find slope in a slope intercept equation?
m=slope in y=Mx+B
convert to standard form: y-2=3(x-4)
3x-y=10
Write the equation of a line that has a slope of 1 and a y intercept of 0
Y=x
What is linear extrapolation
How do you solve when given the slope and 1 point
Substitute the value of m and let the x and y coordinates be (x1, y1) or substitute the value of m, x, and y into the slope-intercept form and solve for b.
What is the equation when the slope = 2 and the y intercept = 12
Y=2x+12
Covert y-8=10(x-2)
10x-y=12
Write the equation of a line that has a slope of 5 and a y intercept of 2
Y=5x+2
Had are parallel lines
Lines in the the same plane that do not intersect EVER
Write y+3/5=x-2/5 in slope-intercept form
Y=x-1
Convert 2x-3y=6 into slope intercept form
Y=2/3x-2
Write y-13=4(x-2) in standard form
-4x+y=5
What is a equation of a line that passes through the point (0,0) and has a slope of -4
Y=-4x
What does a Scatter plot show?
Shows the relationship between 2 sets of data
Which equation doesn’t fit and why:
y-5=3(x-1)
y+1=3(x+1)
y+4=3(x+1)
y-8=3(x-2)
Y+4=3(x+1); the slope-intercept form is not y=3x+2
Write an equation for the line that passes through (-2,5), (5,-2)
Y=-x+3
Write y-1=5/6(x-4) in standard form.
5x-6y=14
write an equation in slope-intercept form for the total rental cost C for a pontoon boat used for T hours
pontoon boat rentals
60 dollars an hour plus 20 dollar cleaning fee.
Y=60x+20