3 years ago

How do you graph equations

1 answer:

7 0

Yes, so start by solving for y by subtracting everything else to the opposite side of the = from y.

1. y = 5 - x
2. y = x - 1

Now that we have our two equations in point-slope form, we can create graphs.

Our point-slope form is y = mx + b where m = slope of line and b = y-intercept.

The slope of equation 1. is -1 and the slope of equation 2. is 1

The y-intercept (how much the line goes up or down on the y-axis) for equation 1. is 5 and the y-intercept of equation 2. is -1

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IfA=(-2,-4) and B=(-8,4), what is the length of AB?

lisabon 2012 [21]

Answer:

<h2>10 units </h2>

solution,

A(-2,-4)--->(X1,y1)

B(-8,4)----->(x2,y2)

now,

$ab = \sqrt{(x2 - x1) ^{2} + {(y2 - y1)}^{2} } \\ \: \: \: \: = \sqrt{ (- 8 - ( - 2)) ^{2} + (4 - ( - 4)) ^{2} } \\ \: \: \: = \sqrt{( - 8 + 2) ^{2} + {(4 + 4)}^{2} } \\ \: \: \: = \sqrt{( - 6) ^{2} + {(8)}^{2} } \\ \: \: = \sqrt{36 + 64} \\ \: \: \: = \sqrt{100} \\ \: \: \: = \sqrt{ {(10)}^{2} } \\ \: \: \: \: = 10 \: units$