Answer:
x= 13
Step-by-step explanation:
12²+5²
=169
square root of 169 =13 answer 13#
Answer:
Let’s rewrite both expressions first
y=3/2x+3
-3x+2y=6
The first expression is already plotted on the graph, so we only need to work on the second one.
Let’s turn the second equation into slope-intercept form. We can later use this to graph.
-3x+2y=6
*add 3x on both sides*
-3x+2y=6
+3x +3x
__________
2y=3x+6
*divide each number by 2*
2y=3x+6
2y/2=3x/2+6/2
y=3/2x+3
Since this is the same equation as the one graphed, it means there are an infinite number of solutions. If one were to graph this, the points would be the same as the original.
Hope this helps comment below for more questions :)
Answer:
Parallel line slope = - 1/2
Perpendicular line slope = 2
Step-by-step explanation:
You can use cross-products to solve this problem. For instance, this expression would be written as 5(8)= 7(-x), or 40= -7x. What you'd do then is simplify the expression by dividing both sides of the equation by the coefficient of x, such that you'd isolate x and have the value of x.
Well the line is straight so it will always have the same slope no matter what points you use but to solve it mathematically you do change in y/change in x
(3.5-(-1))/(4-(-5))
4.5/9 = 0.5
So the slope is 0.5
Now pick 2 random points on the line
(-3,0) and (5,4)
Now do the same thing for these 2 points
(4-0)/5-(-3)
4/8 = 0.5
So no matter what points the slope is always 0.5
