Answer: I believe it is a 90 degree angle.
If the line has a slope of 4, then a line perpendicular to it would have a slope of -1/4.
If the line has a slope of -4, then a line perpendicular to it would have a slope of 1/4.
The relation of slopes between two perpendicular lines is m1*m2=-1
If we then plug in the slope<span> and y intercept into the slope-intercept formula of </span><span>y=mb+b</span><span> where </span><span>m=</span><span> the slope the </span><span>b=</span><span> the y intercept, then </span>
<span>y=mx+b</span><span> becomes</span>
<span>y=0x+<span>(−2)</span></span><span> which simplifies to </span><span>y=−<span>2
</span></span>
What grade give this kind of work
Let's use the variable, x, to represent the unknown number.
We can represent the words, "the sum of a number and six, as : x + 6
The words, " 2 less than the sum", can be represented as: x + 6 - 2
The words, "the product of the number and three", can be written as: 3x
Now create an equation using "is equal to" to join the expressions:
x + 6 -2 = 3x
Now combine like terms and use inverse operations to solve for x:
x + 6 -2 = 3x
x + 4 = 3x
x + 4 - x = 3x - x
4 = 2x
4/2 = 2x/2
2 = x
The unknown number is 2
