Using Intercepts
Find the X intercept:3x+4y=9
X=3
What is the slope of a horizontal line?
Zero
What lines have the same Slope?
What is the standard form of a linear equation?
Ax+By=C
What is Slope intercept form?
Y=mx+b
What is the X- coordinate of the point where the graph intersects the X axis called?
What is the X intercept
Find the slope of (3,2) and (7,8)
What is 6/5
Write the linear equation in point Slope form: Slope=-8; (6,4)
Y-4=-8 (x,-6)
What is a function whos graph forms a straight line called?
Linear function
Write the equation in slope intercept form: Slope=0,
Y intercept=-6
Y=-6
Find the X and Y intercepts of 3x-4y=12
X=4 and Y=-3
What is the slope of a vertical line?
Undefined
Write this equation in point Slope form and in Slope intercept from: Slope=-4, (-1,-2)
Point Slope form: Y+2=-4 (x+1)
Slope intercept: Y=-4x -6
Tell whether the function is linear and turn it into standard form of linear equation: Y=X+6
Yes can be written as -X+Y=6
Write the equation in slope intercept form: Slope= 8
( -4 , 6 ) is on the line
Y= 8x+38
Find the X ab=nd Y intercepts of 6x+8y=24
X=8 and Y=3
Find the slope of the equation: 3x+2y=6
What is -3/2
How do you know when you have Perpendicular Slopes?
When the product of the Slopes equal -1
Tell whether the set of ordered pairs satisfies a linear function. (3,6), (7,5), (11,4), (15,3)
Yes constant change of 4 in X
Constant change of -1 in Y
Write the equation in slope intercept form: Slope= -2
( -4 , -5 ) is on the line
Y=-2x-13
Find the X and Y intercepts of 8x+4y=16
X=2 and Y=4
Find the slope of (20, 3000) and (60, 2000)
What is -25
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
Tell whether the set of ordered pairs satisfies a linear function. (3,12), (5,10), (7,8, (9,6)
Yes constant change of 2 in X
Constant change of -2 in Y
Write the equation in slope intercept form: 9x-3y=12
Y=3x-4