Mark's brother is 5 years older than mark their combined ages add up to 23 how old is my make sure you have expression for Mark
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parallel lines have the same exact slope hmmm what's the slope of y = 2/3x-7 anyway? well, low and behold, is already in slope-intercept form, therefore
.
so we're really looking for the equation of a line whose slope is 2/3, and runs through 3, -1.
For this case we must find the roots of the following equation:
We have to:
Where:
Substituting the values:
We have two roots:
Answer: