A telephone plan charges a regular monthly amount plus charges for the number of minutes of use (x) as shown in the equation y=0.1x+40. What is the slope and y-intercept?
Slope=0.1
Y-intercept= 40
100
What is the x-coordinate of the point where the graph intersects the x axis called?
What is the x intercept
100
What is the slope of a horizontal line?
Zero
100
What is slope intercept form?
y=mx+b
100
Write the linear equation in point slope form:
Slope=-7 ; (4, 2)
y - 2 = -7(x - 4)
200
What is the slope-intercept form of a linear equation?
y=mx+b
200
Find the x intercept: 2x - 4y = 8
x = 4
200
What is the slope of a vertical line?
Undefined
200
Write the equation in slope intercept form:
slope=0, y intercept =-5
y=-5
200
What lines have the same slope?
parallel
300
Tell whether the function is linear and turn it into standard form of linear equation: y=x+3
Yes can be written as -x+y=3
300
Find the x and y intercepts of 3x + 4y = 24
x = 8 and y = 6
300
Find the slope of (4,-2) and(-1,2)
What is -4/5
300
Write the equation in slope intercept form:
slope=4 and (2,5) is on the line
y=4x-3
300
How do you know when you have perpendicular slopes?
Slopes will be opposite and reciprocal (or When the product of the slopes equal -1).
400
Tell whether the set of ordered pairs satisfies a linear function. Explain (2,4), (5,3) (8,2), (11,1)
Yes, constant change in 3 for x. Constant change of -1 in y
400
Find the x and y intercepts of 3x - 2y = 12
x = 4 and y = -6
400
Find the slope of (20,3000) and (60,2000)
What is -25
400
Graph the equation: y= 4x-3
See graph
400
Write this equation in point slope form & in slope intercept form: slope=-4, (-1,-2)
Point slope form: y+2= -4(x+1)
Slope intercept: y=-4x - 6
500
4x - 6y = 36
Tell whether the function is linear and graph the function
Yes it is linear.
500
Find the x and y intercepts of 2x + 4y=8. Then graph it
x = 4 and y = 2
500
Find the slope of the equation: 6x + 5y=30
What is -6/5
500
Write the equation in slope intercept form and graph:
3x + 2y = 8
y = -3/2x + 4. See graph
500
Write the equation in point slope form and in slope intercept form: (1,-4) and (3, 2)
Point slope: y - 2 = 3(x - 3)
slope intercept: y =3x - 7