Answer:
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.
Step-by-step explanation:
<em> got this answer from (www.Math.com) </em>
<em></em>
<em>Glad I helped! =)</em>
Answer:
No, because 3 x 7 = 21 - 4 = 17
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Given system:</u>
<u>Multiply the first equation by 7 and add up the equations:</u>
- -7x + 7y + 7x + 3y = 7*8 - 16
- 10y = 40
- y = 4
<u>Find y:</u>
Let X be the variable used to represent the expression of the total number of books that Mario has read.
We used 4X to represent "four times the number of books". Then we add -2 to interpret the words "for two less than".
Therefore, we have an expression of 4X-2 for the total number of books that Mario has read.
Basically, we need to plug in the given values for the variables
and
into the given expression
. First off, we can plug in all the given values into the expression, giving us
. Now, perform the operations on the inside of the parentheses. Doing this, we get
. Now, we use the distributive property to simplify. This gives us
. Finally, when we add the two numbers, we get
. Hope this helped!
