Question 1191870
y = -3 + (-10) is equal to y = -3 - 10
they're both correct.
here's a reference on the rules for adding, subtracting, multiplying, dividing positive and negative numbers.
<a href = "https://www.cuemath.com/questions/rules-for-adding-subtracting-multiplying-and-dividing-positive-and-negative-numbers/" target = "_blank">https://www.cuemath.com/questions/rules-for-adding-subtracting-multiplying-and-dividing-positive-and-negative-numbers/</a>
while they are both correct, i think y = -3 - 10 might be more correct because it has been simplified further, but that's only if the answer was required to be simplified as far as it could.
since it was not specified that the answer need to be in simplest terms, they are both equally correct.
they will both give you the exact same answer.
here's a graph to show you that they are equivalent.
<img src = "http://theo.x10hosting.com/2022/030901.jpg" >
both equations draw the same line on the graph.